Tricyclic Heteroaromatic Ring Systems IV. Synthesis and Reactions of 4H-Pyrazolobenzimidazole

DOI: 10.1007/BF00798441

Source and publish data:

Monatshefte fur Chemie p. 425 - 432 (1983)

Update date:2022-08-18

Topics:

Authors:

Khan, Misbahul A.

Ribeiro, Vera L. T.

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1007/BF00798441

The 4H-Pyrazolo<1,5-a>benzimidazole ring system was prepared by an intramolecular Ullmann arylation of 4-substituted 1-(o-aminophenyl)pyrazole while other derivatives were obtained by functional group modifications.Some electrophilic substitutions (nitration, bromination) and alkylations were also carried out. - Keywords: Alkylation; Bromination; Nitration; Ullmann arylation

Full text of DOI:10.1007/BF00798441

Products guided by the article

Product name:4H-Pyrazolo[1,5-a]benzimidazole-3-carbonitrile(9CI)

Cas No:64096-91-9

R&D Labs maybe for 64096-91-9

Wuxi Morality Chemical Co., Ltd(expird)

Contact:

Address:B/7F, 321th WuYun Rd, Wanda Plaza, Wuxi City, 214174, China
Zibo Ocean International Trade Co.,Ltd(expird)

Contact:+86 533 5160706

Address:1117, Hongtai Bld., Songling rd, Zichuan,Zibo,Shandong,China
Shandong LuZhou Amino Acid Co., Ltd

Contact:86-539-2218025

Address:yishui economic and technical development zone zhenxing south road
Shijiazhuang Frontierchem Co., Ltd.

Contact:+86-311-89271196

Address:4-4-202 No.15 Biandian Street,Shijiazhuang
Ningbo Distant Chemicals Co.,Ltd

Contact:86-574-27862490,27862438

Address:5F-3,#54 DaShaNi street,Ningbo,CHINA

Relevant to this article

Fe³⁺-K-10 montmorillonite clay catalyzed Friedel-Crafts reaction of unactivated Baylis-Hillman adducts: An efficient stereoselective synthesis of trisubstituted alkenes containing a benzyl substituent

Doi:10.1246/cl.2005.1492
(2005)
Electrostatic Effects Accelerate Decatungstate-Catalyzed C-H Fluorination Using [¹⁸F]- And [¹⁹F]NFSI in Small Molecules and Peptide Mimics

Doi:10.1021/acscatal.9b02220
(2019)
Tailored synthesis of CoO_X thin films for catalytic application

Doi:10.1039/c5ra20013j
(2015)
Proton transport properties in an ionic liquid having a hydroxyl group

Doi:10.1039/c1cp21387c
(2011)
Parallel chemistry investigations of ortho-directed hydrogen isotope exchange between substituted aromatics and isotopic water: Novel catalysis by cyclooctadienyliridium(I)pentan-1,3-dionates

Doi:10.1016/S0040-4039(00)00244-6
(2000)
Asymmetric Reduction of Aromatic Ketones with Chiral Alkoxy-amine-borane Complexes

Doi:10.1039/c39810000315
(1981)

Article Doi